Aamir ibn Abdillah ibnil Jarrah (R) accepted Islam together with Hazrat Uthman ibn Maz’oon (R) on the invitation of Hazrat Abu Bakr t. He migrated to Abyssinia when the second group of Sahabah y were migrating there and also migrated to Madinah Munawwarah thereafter. He passed away during the plague of Amwaas in Jordan in the year 18 A.H. at the age of 58. Hazrat Muaaz ibn Jabal (R) led his Janazah Salah.
Hazrat Abu Bakr's (R) name was Abdullah and his title was Abu Bakr. His was also known as Ateeq and Atqa. He was born approximately two years after Rasulullah (Sallallahu Alaihi Wasallam) and passed away approximately two years after Rasulullah (Sallallahu Alaihi Wasallam) on 22 Jumadal Ukhra 13 A.H aged 63.
He was known by the title Abu Abdir Rahman and also Ibn Umm Abd. He was the sixth man to bring Imaan in the early days of Islam. Rasulullah (Sallallahu Alaihi Wasallam) treated him most affectionately and always kept him close to his side. He was amongst the personal attendants of Rasulullah (Sallallahu Alaihi Wasallam)
Hafsa is the daughter of Hazrat Umar ibn Khattab (R) and one the noble wives of Rasulullah r. Her mother was Zaynub bint Maz'oon (Radiyallahu Anha). Before marrying Rasulullah (Sallallahu Alaihi Wasallam) she was married to Hazrat Khunais ibn Huzafah As Sahmi t. She made Hijrah to Madeenah Munawwarah with him. He was severely wounded in the Battle of Badr and passed away thereafter.
Hazrat Bilal (R) was of African origin and was born from the slaves of the Banu Jumah tribe. He accepted Islam in the early days and was the first person to publicly proclaim his faith in Makkah. He participated in Badr and all the battles that took place therafter. Umayyah ibn Khalaf was one of his chief tormentors when he accepted Islam. Allah Ta'ala made it such that Hazrat Bilal (R) himself killed him in the Battle of Badr.